1395222588 has 18 divisors (see below), whose sum is σ = 3526812744. Its totient is φ = 465074184.

The previous prime is 1395222581. The next prime is 1395222599. The reversal of 1395222588 is 8852225931.

1395222588 is a `hidden beast` number, since 1 + 395 + 2 + 2 + 258 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1395222581) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19378056 + ... + 19378127.

Almost surely, 2^1395222588 is an apocalyptic number.

1395222588 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1395222588 is an abundant number, since it is smaller than the sum of its proper divisors (2131590156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1395222588 is a wasteful number, since it uses less digits than its factorization.

1395222588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38756193 (or 38756188 counting only the distinct ones).

The product of its digits is 345600, while the sum is 45.

The square root of 1395222588 is about 37352.6784581775. The cubic root of 1395222588 is about 1117.4150066734.

The spelling of 1395222588 in words is "one billion, three hundred ninety-five million, two hundred twenty-two thousand, five hundred eighty-eight".